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Giant Panda Cub Getting Bigger

Giant Panda CubThe giant panda cub born at the Smithsonian’s National Zoo received a clean bill of health from veterinarians at the National Zoo three and a half weeks after her birth. It was her first full checkup. (credit: Smithsonian's National Zoo)

Giant Panda CubThe giant panda cub born at the Smithsonian’s National Zoo received a clean bill of health from veterinarians at the National Zoo three and a half weeks after her birth. It was her first full checkup. (credit: Smithsonian's National Zoo)

Giant Panda Cub

File photo of the giant panda cub born at the Smithsonian’s National Zoo. (credit: Smithsonian's National Zoo)

File photo of the giant panda cub born at the Smithsonian’s National Zoo. (credit: Smithsonian's National Zoo)

Giant Panda CubThe giant panda cub born at the Smithsonian’s National Zoo received a clean bill of health from veterinarians at the National Zoo three and a half weeks after her birth. It was her first full checkup. (credit: Smithsonian's National Zoo)

Giant Panda CubThe giant panda cub born at the Smithsonian’s National Zoo received a clean bill of health from veterinarians at the National Zoo three and a half weeks after her birth. It was her first full checkup. (credit: Smithsonian's National Zoo)

Baby Panda Vet Exam 10/23/13The National Zoo's panda cub had a medical exam and got her first vaccine on Oct. 23. (credit: Smithsonian's National Zoo)

Baby Panda Vet Exam 10/23/13The National Zoo's panda cub had a medical exam and got her first vaccine on Oct. 23. (credit: Smithsonian's National Zoo)

Baby Panda Vet Exam 10/23/13The National Zoo's panda cub had a medical exam and got her first vaccine on Oct. 23. (credit: Smithsonian's National Zoo)

Baby Panda Vet Exam 10/23/13The National Zoo's panda cub had a medical exam and got her first vaccine on Oct. 23. (credit: Smithsonian's National Zoo)

Giant Panda CubThe giant panda cub at Smithsonian’s National Zoo grew a lot during the 16-day federal government shutdown. During that time, the panda cam was off and the Smithsonian did not post updates or pictures on their website, Facebook or Twitter. (credit: Smithsonian's National Zoo)

Giant Panda CubThe giant panda cub at Smithsonian’s National Zoo grew a lot during the 16-day federal government shutdown. During that time, the panda cam was off and the Smithsonian did not post updates or pictures on their website, Facebook or Twitter. (credit: Smithsonian's National Zoo)

Giant Panda CubThe giant panda cub at Smithsonian’s National Zoo grew a lot during the 16-day federal government shutdown. During that time, the panda cam was off and the Smithsonian did not post updates or pictures on their website, Facebook or Twitter. (credit: Smithsonian's National Zoo)

Giant Panda CubThe giant panda cub at Smithsonian’s National Zoo grew a lot during the 16-day federal government shutdown. During that time, the panda cam was off and the Smithsonian did not post updates or pictures on their website, Facebook or Twitter. (credit: Smithsonian's National Zoo)

Giant Panda CubThe giant panda cub at Smithsonian’s National Zoo grew a lot during the 16-day federal government shutdown. During that time, the panda cam was off and the Smithsonian did not post updates or pictures on their website, Facebook or Twitter. (credit: Smithsonian's National Zoo)

Giant Panda CubThe giant panda cub at Smithsonian’s National Zoo grew a lot during the 16-day federal government shutdown. During that time, the panda cam was off and the Smithsonian did not post updates or pictures on their website, Facebook or Twitter. (credit: Smithsonian's National Zoo)

WASHINGTON, DC - JANUARY 06: Giant panda bear cub Bao Bao moves around inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Giant panda bear cub Bao Bao moves around inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo credit: PAUL J. RICHARDS/AFP/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda Cub

WASHINGTON, DC - JANUARY 06: Giant panda bear cub Bao Bao (L) and her mother Mei Xiang move around inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Giant panda bear cub Bao Bao (L) and her mother Mei Xiang move around inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Panda Cub Bao Bao Makes Her Debut At Washington's National Zoo

WASHINGTON, DC - JANUARY 06: Giant panda bear cub Bao Bao (L) and her mother Mei Xiang move around inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Giant panda bear cub Bao Bao (L) and her mother Mei Xiang move around inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo by Chip Somodevilla/Getty Images)

Panda Cub Bao Bao Makes Her Debut At Washington's National Zoo

WASHINGTON, DC - JANUARY 06: Animal Keeper Marty Dearie carries giant panda bear cub Bao Bao inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Animal Keeper Marty Dearie carries giant panda bear cub Bao Bao inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014 with her mother, Mei Xiang. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014 with her mother, Mei Xiang. (Photo credit: PAUL J. RICHARDS/AFP/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo by Chip Somodevilla/Getty Images)

Panda Cub Bao Bao Makes Her Debut At Washington's National Zoo

WASHINGTON, DC - JANUARY 06: Giant panda bear cub Bao Bao moves around inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Giant panda bear cub Bao Bao moves around inside the David M. Rubenstein Family Giant Panda Habitat at the Smithsonian National Zoological Park January 6, 2014 in Washington, DC. Born August 23, 2013, and weighing nearly 17 pounds, Bao Bao will make her public debut at the zoo on January 18. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda CubBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo by Chip Somodevilla/Getty Images)

Bao Bao Panda Cub

Bao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo credit: PAUL J. RICHARDS/AFP/Getty Images)

Bao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014. (Photo credit: PAUL J. RICHARDS/AFP/Getty Images)

US-CHINA-PANDA-BAO BAOBao Bao, the Giant Panda cub, is seen by the media for the first time Jan. 6, 2014 inside her glass enclosure at the Smithsonian's National Zoo in Washington, D.C., a few days before going on display to the general public. Bao Bao was born at the Smithsonian's National Zoo Aug. 2, 2013. (Photo credit: PAUL J. RICHARDS/AFP/Getty Images)